Metal-working tool



July 15, 1924. 1501,751

c. w. CRANNELL METAL WORKING TOOL Filed Aug. 14, 1922 2 Sheets-Sheet l July 15, 1924. 1,501,751

c. w. CRANNELL METAL WORKING TOOL Filed Aug. 14 1932 2 Sheets-Sheet 2 Patented July 15, 1924.

UNITED STATES 1,501,151 PATENT OFFICE CHARLES W. CRANNELL, 0F CHAPPEL, NEBRASKA, ASSIGNOR 0F ONE-HALF TO BENJAMIN J'. CONNOR, OF CHAPPEL, NEBRASKA.

METAL-WORKIN G TOOL.

Application filed August 14, 1922. Serial No. 581,686.

To all whom it may conce'm:

Beit known that I, CHARLES W. CRAN- NELL, a citizen of the United States, residing at Chappel, in the county of Deuel and State of Nebraska, have invented certain new and useful Improvements in Metal-Working Tools, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in metal working tools for the bending and shaping of metals.

In the particular embodiment of the invention as shown in the drawings and hereafter described in the specification I have shown and described the use of my improved tools for repairing, shaping and making springs for vehicles.

Very often one or more leaves in springs used upon pleasure or trucking vehicles become broken and it is necessary to replace the broken spring leaves. My invention is particularly useful in the shaping of new leaves to replace the broken spring leaves and my invention also has the embodiment of a structure adapted to form eyes in the ends of the main spring leaves.

The primary object of my invention is to provide an improved set of tools for the bending and shaping of metals.

A further object of my invention is to provide a tool set of novel construction for the repairing, fitting and shaping of vehicle springs.

Another and further object of my invention is to provide a metal working tool for rolling or bending eyes in metal.

A still further object of my invention is to provide a set of tools of novel construction which are cheap and easy or manufacture and highly efficient in operation for bending and shaping metals.

Other further objects and novel features of construction of my improved invention will appear in the following description and accom anying drawings.

In the drawings Figure 1 is a perspective view showing the use of my improved tools for fitting a new leaf to a main leaf.

Fig. 2 is a perspective view showing the use of my improved tool for rolling or bending an eye in the end of a main spring leaf.

Fig. 3 is a vertical sectional view taken through the vise which is used in conjunction with my tools.

Fig. 4 is a vertical sectional view taken through my improved grab lever, the lever being provided with what I have termed a flatter.

Fig. 5 is a fragmentary transverse sectional view taken on the line 55 of Fig. 4, looking in the direction indicated by arrows.

Fig. 6 is a vertical sectional view taken on the line 6-6 of Fig. 4 looking in the direction indicated by arrows.

Fig. 7 is a fragmentary side view of the lower end of the holding lever.

Fig. 8 is a vertical sectional view taken through my improved grab lever, the lever being fitted with what I have termed a grab.

Fig. 9 is a vertical sectional view taken on the line 9-9 of Fig. 8, looking in the direction indicated by arrows.

Referring now to the drawings which show the embodiment of my invention for the particular use of shaping spring leaves, like parts are designated by similar reference numerals.

For the particular use of the tools shown in the drawings I use an anvil A, a vise B, a grab lever O, and a holding lever D.

The anvil A is of any common form to be found in a blacksmiths or work shop while the vise B consists of the two L shaped members 10 and 11 which are bolted or otherwise suitably fastened together as at 12 to form the opening 13. The bottom jaw member of the vise is provided with a downwardly extending portion 14; adapted to be inserted in the opening 15 which is common to anvils. The downwardly extending portion 14 of the vise extends below the anvil and is provided with an opening 16 into which is inserted a wedge 17 or the like to clamp the vise upon the anvil. Screw-threadedly mounted in the upper jaw member 10 of the vise is an operating handle or crank 18 which carries on its lower end within the jaw opening. 13 the jaw clamping member 19 which is adapted to clamp articles in the vise jaws when the jaw clamping member is forced downwardly through the mediumof the operating handle.

In Fig. 1 of the drawings I have shown the use of my improved tools in fitting or shaping a new leaf to a main spring leaf. In this figure of the drawings 20 represents the main leaf and 21 the leaf being shaped while both of the leaves are clamped in the vise B in the manner previously described and clearly shown in the drawings.

slot 23 in which is a justably mounted an outwardly extending pin 24, while the end 26 of the handle is provided with an opening 27in which is suitably fastened an outwardly extending pin 25. Once the upper in 24 is set in the desired relation to the ower in the ad'ustment is rarely chan e but when it is esired to work with met 5 of different thicknesses it is some-- times necessary to increase or diminish the distance between the two pins.

The grab lever C consists of the main handle 28 in the lower end of which is a slot 29 in-which is ad'ustably mounted. by means of a nut 30, or the like, an outwardly extending in 31 provided at its outer end with an en arged head 32.

The inner end of the pin 31 is provided with two flattened sides 39 which impinge against the side walls of the slot 29 of the handle 28 and prevent the pin from rotat ing and in like manner is the end of the pin 34 rovided with flattened sides 34.

The ower end 33 of the handle 28 carries an outwardly extendin pin 34 which is retained in the handle in any suitable vmanner such as b means of the nut 35 all of which clear y appears in the draw and more particularl in Fig, 4 thereof.

en the grab lever is-used with the holding lever D for the work shown in Fig. 1 of the drawings I mount on the ab lever what I have termed a flatter. his flatter consists of an approximate flat base 36 which has its ends slightly beveled or rounded as at 37. Above the base 36 of the flatter'and integral therewith is a bearing 38 which is adapted to fit over the pin 31. To mount the flatter on the pin it will be readily understood that the nut 30 of the in must be removed, the pin inserted throu h the flatter and the nut 30 then replace The enlarged head 32 of the pin 31 prevents the flatter from. esca ing over the outer end of the pin and the atter can not escape over the inner end of the pin because of the operating handle 28.

With the two tools of the construction just described and with the spring leaves 20 and 21 in the vise as shown in Fig, 1 the levers C and D are 0 rated as clearly shown in this figure. T e two leaves of the sprin are between the two ins 24 and 25 o the holding lever and tween the pin 34 and the flat base 36 of the flatter,

The two levers are then moved along the ing the flatter along the leaves, while hold ing the end of the leaves together by the ho ding lever D, that the new spring leaf can be made to assume the shape of the main leaf and that a perfect fit will result.

From the foregoing description itQwill be readily understood that the same manner of bending and shaping of any metals that are worked in a similar manner to sprin s,

that is one metal above the other, can e followed with the use of my improved tools. It will likewise be readily understood that any number of new leaves for a spring can be shaped and fitted in the manner described.

In making a main leaf, in which it isv necessary to form an eye in the leaf ends, I use the grab lever and in place of the flatter I mount a grab, which as clearly appears in Figs. 2, 8 and 9 of the drawin 5, consists of the bearing 40 havin ened base 41 in the lower face 0 which is formed an approximately V-sha ed longitudinal groove 42. The top of ti:

extending operating handle 43 which is pro-- vided with an offset 44 so as to protect the knuckles of the operator when usin this tool. It will be readily understood 0 course that the rest of the rab lever construction is the same as has been previously described for use with the flatter, the flatter being merely removed and the grab inserted on t e pin 31, of the grab lever, in place of the flatter. B means of the operating handle 43 the gra is rotated upon the pin 31 of the tool.

In forming the eye in the ends of the spring leaf the leaf end is out on a slant or angle as clearly appears at 44' so that when the eye is rolled in the leaf end. will fit close u on the leaf when the eye is finished. 0 form the eye the pin 34 of the grab lever is rested upon the top of the main spring leaf 20, as clearly appears in Fig. 2 of the drawings, and the end of the leaf is clamped between the pin 34 and the V-shaped base 42 of the grab, W'hile maintaining this hold upon the end of the spring leaf the tool is rotated upon the pin 34 in a direction indicated by arrow in Fig, 2, the result bein the forming of a perfect eye or circle in t e end of the spring leafof a diameter similar to the diameter of the pin 34 of the tool. Due to the tapered end 44' of the main spring leaf 20 the end of the leaf will rest snugly upon e bearing 3 40 of the grab is provided with an upwardly a thic the upper face of the leaf as clearly appears in Fig. 1 of the drawings, making a close fit and nicely formed eye.

It will be readily understood that an eye of any desired diameter can be formed by using in place of the pin 3d a'pin of the diameter of the desired size of the eye.

If for any reason it should be desired to straighten out or unroll the eye of the main spring leaf the grab can be made to engage the leaf 20 in the manner shown in Figs. 2 and 9 of the drawings and the tool rotated in opposite direction.

From the foregoing it will be seen that I have provided a set of tools with which repairing and shaping of metals and particularly spring leaves can be successfully carried out. These tools make it possible for any one who understands the heating of y as spring steel to repair springs successful there is no reason why repaired springs should not be as good as the original. The trouble heretofore has always been in properly fitting the repaired or newly made spring leaves. I know of no tool made for the purpose of repairing or fitting of sprin leaves which will accomplish the result 0 my improved tool. My improved tools make perfect fitting leaves with no unequal strains or humps in them and at the same time allow and provide for the making of the eyes in the ends of the main spring leaves. My tools are also well adapted for reshaping the spring leaves that have sagged out of shape due to various causes.

I also desire to point out that my im-' proved rab lever tool when fitted with the grab an made on a larger scale could also be used to bend eyes or rings in steel for other purposes than that mentioned heretofore without departing from the spirit of m invention.

aving thus described my invention what I desire to protect and claim by Letters Patent is:

1. A set of tools for working metal springs or the like, comprising a combination of a metal holding tool, a metal working member comprising an operating handle having two outwardly extending members in separated parallel relation, the inner extending member of the working member provided with a metal working tool having a flat elongated base with beveled ends, and the metal working tool adapted to be moved along the work, for the purpose described.

2. A set of tools for working metal springs or the like, comprising a combination of a metal holding tool, a metal working member comprislng an operating handle having two outwardly extending members in separated parallelrelation, and the inner exmetal to be held, a metal working member comprising an operating handle having two outwardly extending members in separated parallel relation, the inner extending member of the working member provided with a metal working member having a flat elongated base, and the metal workin tool adapted to be moved along the wor r, for the purpose described.

4. A set of tools for working metal springs or the like, comprising a metal holding member and a metal working member, the metal holding member composed of an operating handle provided with two outwardly extending members in separated parallel relation, the metal working tool comprising an operating handle having two,

outwardly extending members in separated parallel relation, the inner extending member of the metal working tool provided with a metal working member having a fiat elongated base, and the inner outwardly extending members of both tools adjustable in relation to their adjacent extending member, for thepurpose described.

5. A metal working tool comprising an operating handle provided with two outwardly extendin members in separated parallel relation, an the inner extending member of the tool rotatably ca ing a metal working member havin a at elongated base with beveled ends, or the purpose described.

6. A metal working tool comprisingan. operating handle provided with outwardly extending members in separated parallel relation at right angles to the handle, the 1nner extending member rotatably carrying a metal working member having a fiat elongated base with beveled ends, and the metal working member free to rotate, for the purpose described.

7. A metal working tool comprising an operating handle provided with two outwardly extending members in se arated relation at ri ht angles to the ban 1e and the inner exten ing member of the tool adapted to receive interchangeably a flatter and a grab, for the pur ose described.

In testimony whereof I hereunto afiix my signature.

CHARLES W. CRANNELL 

